---
lang: "en"
title: "IWM-LR3 LoRaWAN Module for Water Meters with INDUCTIVE predisposition"
sku: "IWM-LR3"
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brand: "B METERS"
image: "https://shop.marcomweb.it/storage/5376/conversions/IWM-LR3-webp.webp"
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IWM-LR3: LoRaWAN Module for Water Meters with INDUCTIVE predisposition

The IWM-LR3 has been designed to enable wireless remote reading in various applications ranging from residential to commercial and industrial sectors. The radio module, thanks to the presence of the inductive target on the meter dial, allows reading of the measured volume without site access constraints using Long Range LoRa radio technology in compliance with the LoRaWAN standard, making the device integrable into multi-service networks.

- Consumption analysis with reverse flow compensation ensuring a perfectly aligned totalizer and meter mechanism at all times.
- Fraud control (removal of the radio module, application of an external magnetic field, reverse flow, plant leak identification). Magnetic tampering of the meter and removal are recorded and reported to the receiving system via radio transmission.

The presence of reverse flow is recorded in an additional register that allows calculating the amount of water passed in the opposite direction. The leak function can be monitored at the time of reading or via AMR system if timely updates are desired.
- IP68* protection allows use of the module even for meters installed in challenging environments.
- NFC interface allows configuration and commissioning of the device using a simple smartphone app.

## Technical Specifications

- Radio Interface: LoRaWAN 1.0.2 class A | LoRa DR5-DR0 | EU863-870 MHz $\le$ 25 mW
- Network attach modes: OTAA / ABP (on request)
- Transmission frequency: max. 4 per day
- Coverage: Up to 5 Km*
- Compatible meters: CPR-M3-I, GMDM-I, GMB-RP-I, GMB-I
- Minimum pulse weight (K): 1 liter
- Maximum reading error: 0.5%
- Configuration: NFC (with Android app)
- Power supply: Non-replaceable lithium battery, maximum duration 10 years
- Protection: IP68***
- Dimensions (w x d x h): 88 x 75 x 60 mm
- Operating temperature: +1° ÷ +55°C
- Transmitted data: Volume (consumption), reverse flow quantity, alarms
- Alarms: Low battery, module removal, attempted magnetic fraud, reverse flow, detection of leaks in the plant
- Module programming requirements: Android device (smartphone, tablet, etc.) equipped with NFC interface and the free android app Bmetering NFC Config available on GOOGLE PLAY

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Source: https://shop.marcomweb.it/en/lorawan-water/iwm-lr3-lorawan-module-for-water-meters-with-inductive-predisposition

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